摘要
提出一种基于层次分割的电网灾难性事故风险模糊评估高效算法。该方法采用考虑安防装置的层次分割策略,综合利用枚举法和模拟法的优点,避免了模拟法对无故障状态的无效抽样,克服了由此可能造成的抽样空间狭窄。算法采用可信性测度度量故障发生可能性,无需构造复杂抽样密度函数,在保证计算精度的前提下提高计算效率。通过对IEEE 24节点测试系统的仿真并与现有方法比较,证明方法计算速度快,算法合理,可有效识别最可能的事故序列。
Based on hierarchy partition, an efficient risk fuzzy assessment method for catastrophic accident of power grid is pro- posed. This method uses the hierarchy partition strategy which takes the security devices into consideration. It can avoid fault - free state sampling in each space and overcome the possible narrowness of sampling space by taking advantage of enumeration method and simulation method. The credibility measure is adopted to describe the fault possibilities, so it is no need to construct complex sampling density function, which can improve both analysis speed and calculation accuracy. The IEEE 24 - bus reliability test system is used in simulation, compared with some traditional methods, the results show that the proposed method is faster and more reasonable and it can identify the most possible accident sequences more efficiently.
出处
《四川电力技术》
2014年第2期22-26,共5页
Sichuan Electric Power Technology
关键词
灾难性事故
可信性测度
层次分割
风险评估
catastrophic accident
credibility measure
hierarchy partition
risk assessment
